USING AQUEOUS DISPERSIONS OF VINYLIDENE FLUORIDE-BASED POLYMERS TO OBTAIN PAINTS FOR ARCHITECUTURAL OBJECTS Russian patent published in 2011 - IPC C08F14/18 C08F14/22 C09D5/02 C09D5/03 C09D127/16 C09D5/08 C08L27/16 

FIELD: chemistry.

SUBSTANCE: invention relates to the paint industry, particularly to aqueous dispersions based on vinylidene fluoride for obtaining protective paints. The vinylidene fluoride-based aqueous dispersions contain polymer particles with average size of 0.260-0.3 micrometres, obtained via polymerisation of vinylidene fluoride-based emulsions, optionally in the presence of one or more fluorinated copolymers, in the presence of a bifunctional surfactant of formula: A - R_f - B (I), where: A = -O-CFX-COOM; B = -CFX-COOM; X = F, CF₃; M=NH₄ alkali metal, H; R_f denotes a straight or branched perfluorinated chain; or a (per)fluoropolyester chain.The average molecular weight (I) is in the range 650-800. Described also is use of vinylidene fluoride-based aqueous dispersions to produce water-based protective paints and protective paint for metal bases, obtained using vinylidene fluoride-based aqueous dispersions; use of aqueous dispersions of polymers based on vinylidene fluoride to obtain powder used in preparing protective paints for powder coatings.

EFFECT: coatings obtained using paints which contain vinylidene fluoride-based aqueous dispersions have good physical and mechanical properties.

17 cl, 5 tbl, 11 ex, 8 dwg